公开(公告)号：US20140097756A1

公开(公告)日：2014-04-10

申请号：US14107721

申请日：2013-12-16

Applicant: Huawei Technologies Co., LTD.

Inventor： Degang Zhong ,  Sulin Yang ,  Shenping Li ,  Zebin Li

IPC: H04B10/564

CPC classification number: H04B10/564 ,  G01M11/3109 ,  H01S5/042 ,  H01S5/0683 ,  H04B10/071

Abstract: A method can be used for controlling optical power. Output optical power of an optical source is monitored and it is determined whether a preset test control signal is received. When the preset test control signal is not received, a data signal is modulated to output light of the optical source and a bias current of the optical source is adjusted according to an output optical power monitoring result of the optical source to implement automatic power control. When the preset test control signal is received, a test is started and a test signal is superimposed to the data signal to form a superimposed signal. The superimposed signal is modulated to the output light of the optical source. The output optical power monitoring result of the optical source is ignored during the test period to maintain the bias current of the optical source at a preset target value.

Abstract translation: 一种方法可用于控制光功率。 监视光源的输出光功率，并确定是否接收到预设的测试控制信号。 当未接收到预设的测试控制信号时，调制数据信号以输出光源的光，并且根据光源的输出光功率监视结果来调节光源的偏置电流以实现自动功率控制。 当接收到预设的测试控制信号时，开始测试并且将测试信号叠加到数据信号以形成叠加的信号。 叠加的信号被调制到光源的输出光。 在测试期间，光源的输出光功率监测结果被忽略，以将光源的偏置电流保持在预设的目标值。